Langstone ignores my Pluto

Forum for discussion about the Langstone Microwave Transceiver that shares some features with the Portsdown. Wiki: https://wiki.microwavers.org.uk/Langstone_Project
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g4csd
Posts: 3
Joined: Sun Dec 01, 2024 4:14 pm

Langstone ignores my Pluto

Post by g4csd » Tue Aug 26, 2025 5:13 pm

I want to use my Portsdown in Langstone mode, to drive a QO-100 station, and then 13, 9 and 6cm systems. I followed the instructions to update the Portsdown software and install Langstone v2, then selected Langstone Config, then Switch to Langstone. Up to this point, everything works fine, but from now on everything I try ends with No LimeSDR connected, which is true because I’m using a Pluto. If I set up to boot direct to Langstone I get “Langstone Transceiver Lime version” before it reverts to the Portsdown main menu.

I get no error messages at start up, and when I check Pluto configuration it responds with “v0.31-4-g9ceb-dirty. This is correct for Portsdown operation”. I have tried both pluto.local and 192.168.2.1 as the Pluto IP address.

If I check Info on the M1 screen, it says Output to Pluto and registers the Audio Device as a USB PnP Sound Device, but then try Switch to Langstone and up comes the complaint about No LimeSDR connected.

What am I doing wrong? I have used the Pluto as part of a Satsagen set-up, is this the problem?

73 Paul G4CSD

g4eml
Posts: 761
Joined: Thu Apr 26, 2018 9:36 am

Re: Langstone ignores my Pluto

Post by g4eml » Wed Aug 27, 2025 7:33 pm

I can't remember how Dave configures it from Portsdown, I am sure there is probably a way to select the device.

However if you log into the pi and go to the Langstone directory you can then run the 'set_sdr' script.. That will allow you to switch between Lime and Pluto.

Colin G4EML

G8GKQ
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Re: Langstone ignores my Pluto

Post by G8GKQ » Wed Aug 27, 2025 7:51 pm

On the Portsdown, go to Menu 3, Langstone Config and then select "Langstone use Pluto".

Dave

g4csd
Posts: 3
Joined: Sun Dec 01, 2024 4:14 pm

Re: Langstone ignores my Pluto

Post by g4csd » Thu Aug 28, 2025 7:47 am

Thanks Dave, but I don't have a 'Langstone use Pluto' option on that Menu, only 'Langstone use Lime'. So it thinks it's in the Pluto config at that point, but when I hit 'Start Langstone', up comes the 'No LimeSDR connected' screen.

I'll investigate the RasPi back door approach later

g0mjw
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Joined: Sat Sep 20, 2014 9:15 am

Re: Langstone ignores my Pluto

Post by g0mjw » Thu Aug 28, 2025 8:29 am

Have you tried toggling that setting? It would be the logical thing to do first rather than messing around in the config files.

G8GKQ
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Re: Langstone ignores my Pluto

Post by G8GKQ » Thu Aug 28, 2025 8:38 am

As Mike says, if you touch "Langstone use Lime" it will toggle to "Langstone use Pluto". That's all you need to do.

Dave

DL1BJV
Posts: 64
Joined: Fri Jan 05, 2018 6:02 pm

Re: Langstone ignores my Pluto

Post by DL1BJV » Thu Aug 28, 2025 8:45 am

Hi Paul,

I suppose you are using the latest P4 Version 202508230.

As Dave wrote:
- Enter M3, Langstone Configuration Menu (39)
- you should see the 'Langstone V2 Installed' button showing up in white,
- next to it on the right you will see the 'Langstone use Lime' button in blue,
- touch the 'Langstone use Lime' button and it will change to 'Langstone use Pluto'
- on the right above exit, touch the 'Start Langstone' button'
- the screen should change showing 'Pluto rebooting' and then 'Langstone Transceiver Pluto Version Loading',

and you should now have Langstone running with your Pluto.

Wolfgang.

g4csd
Posts: 3
Joined: Sun Dec 01, 2024 4:14 pm

Re: Langstone ignores my Pluto

Post by g4csd » Thu Aug 28, 2025 8:52 am

YES!!!!
If you want Pluto, toggle Lime. Thank you. Logicality was never one of strong suits.
Onwards. 73 Paul G4CSD

g8gtz
Posts: 1786
Joined: Wed Apr 07, 2010 6:26 pm

Re: Langstone ignores my Pluto

Post by g8gtz » Thu Aug 28, 2025 4:56 pm

Let me know when you are ready for a test Paul :-)

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